SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING
Part No. 1122145
27
Pronto
®
M94
™
TROUBLESHOOTING GUIDE
NOTE: For additional troubleshooting information and explanation of error codes, refer to the
Electronics Manual supplied with each wheelchair.
SYMPTOM
PROBABLE CAUSE
SOLUTIONS
Batteries draw excessive
current when charging.
Battery failure.
Electrical malfunction.
Have batteries checked for shorted cell. Replace if
necessary.
Contact Dealer/Invacare for service.
Battery indicator flashes
the charge level is low -
immediately after
recharge.
Battery failure.
Malfunctioning battery
charger.
Electrical malfunction
Check batteries for shorted cell. Replace if neces-
sary.
Contact Dealer/Invacare for service.
Contact Dealer/Invacare for service.
Battery indicator flashes
the charge level is low -
too soon after being
recharged.
Batteries not charged.
Weak batteries
Have charger checked.
Replace batteries if necessary. Contact Dealer/
Invacare for service.
Motor “chatters” or runs
irregular.
Electrical malfunction.
Contact Dealer/Invacare for service.
Only one (1) drive wheel
turns.
Electrical malfunction.
One (1) motor lock is disen-
gaged.
Contact Dealer/Invacare for service.
Engage motor lock.
Joystick erratic or does
not respond as desired.
Damaged motor coupling.
Electrical malfunction.
Controller programmed
improperly.
Contact Dealer/Invacare for service.
Contact Dealer/Invacare for service.
Reprogram cotnroller (Refer to MK5 EX™or
MK5 NX™ electronics owner’s manual supplied
with wheelchair).
Wheelchair does not
respond to commands.
Poor battery terminal con-
nection.
Have terminals cleaned.
Power indicator off - even
after recharging.
Electrical malfunction.
Contact Dealer/Invacare for service.